Repeated subtraction
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Division can be done using repeated subtraction by repeatedly subtracting the divisor from the dividend until reaching zero. For example, to divide 12 by 2, one would repeatedly subtract 2 from 12 until reaching 0, with the number of subtractions equaling the quotient. A calculator can perform this repeated subtraction automatically without needing to count, displaying the zero result and number of subtractions performed.
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Repeated subtraction
- 1. A) Division using Repeated Subtraction Example: Solve 12 ÷ 2 using repeated subtraction Method: Take away by 2 until it gets zero result. 12 – 2 = 10 10 – 2 = 8 8 – 2 = 6 6 – 2 = 4 4 – 2 = 2 2 – 2 = 0 Therefore, 12 ÷ 2 = 6 B) How the calculator skip reading and counting? For example, key in 12 – 6 on the calculator then press “=” continuously until it displays zero result. Count how many times it is subtracted by 2? Answer: There are six 2s.